Do you want to put in on a CD for back up?
I would suggest going here http://www.dekabyte.com/filesplitter/download.html
It's a simple little file splitter. You can splt your file up into 650 mb then just burn the pieces on to a few CD+R's. It creates a .exe file when you split it. Make sure you add that to one of your disk. When you want to merge the files together again just double click the .exe after you have the files in the same folder and you're golden!